Before Scratch was spayed, she used to sleep on my bed all the time. Since she got spayed, only a few times a week she'll sleep on my bed. For the past two weeks or so, she'll walk into my room around 4 am and meow until I say her name. Then she'll jump up on the bed until I pet her, then she runs away. She hasn't slept on my bed for a few weeks, either. Do you think it's because of the spay?